Fire extinguisher



7 ZZ BYV ATTORN EY May 17, 1955 NURKlEwlcz FIRE EXTINGUISHER 2 Sheets-Sheet 2 Filed Dec.,17, 19.52

INVENTOR [6N/:mls l/I/z/,Q/f/fw/cz BY i ATTORNEY United States Patent G FIRE EXTINGUISHER Ignatius Nurkiewicz, Brooklyn, N. Y., assignor to Stop- Fire, Inc., Brooklyn, N. Y., a corporation of New York Application December 17, 1952, Serial No. 326,415

4 Claims. (Cl. 169-31) This invention relates to a tank tire extinguisher. It is an object of this invention to provide an extin- 2,708,432 Patented May 17, 1955 rice A bar 20 V-shape in cross section, is fastened at one end to plug 13, at 21, and at the other, to the end of rod 14, at 22, whereby the nozzle block 15 cannot slide off the end of the rod, and whereby, also, its rotary motion around the rod of the block 15 is limited to less than a complete revolution, so that the tube 18 cannot be wound tightly around the rod 14, so as to prevent the block from falling lengthwise of the rod, from one end to the other. As shown, the outer end of the block 15 is bent away from the bottom end of the tank in order to conserve the room within the tank. The outer end of this intake nozzle is preferably attened out in a plane, transguisher having a tank which will discharge its entire contents when operated, no matter what the physical position of the tank may be.

It is a further object to provide an extinguisher having a self-positioning Siphon tube, which in the preferred form is connected to the dicharge by a liexible tube, in a manner not to interfere with the self-positioning of the intake.

It is a further object to provide an extinguisher adapted to be filled with an extinguishing fluid under gaseous pressure, which will provide a self-positioning Siphon tube intake connected to the discharge by a ilexible tube in a manner to prevent escape of the pressurizing gas while permitting the intake to position itself without interference with the tube.

It is a further object to provide an extinguisher of the type described, with a discharge valve, which will hold the pressure without leakage, and yet which may be operated from a plurality of different directions, without interference with each other.

lt is a further object to provide an extinguisher of the character described with a valve mechanism that may be held open for charging, and then released, by a gravity controlled mechanism, independent of the normal valve operating mechanism.

The invention is illustrated in the accompanying drawings, in which Fig. 1 is a central longitudinal section through the device; Fig. 2 is diagrammatic section to show the disposition of the Siphon tube and intake while the container is resting on its bottom end. Fig. 3 is a similar View showing the disposition while the container is upside down. Fig. 4 is a detail of the intake construction on a plane transverse to the axis of the container. Fig. 5 is a detail of the valve operating mechanism.

In the drawings the numeral 10 shows a container for holding the fire extinguishing substance, which may be either an organic halide, such as carbon tetrachloride, or chlorobromethane, commonly referred to as C. B. M., or it may be a powder as prepared carbonate. The container is charged with a pressurizing gas, as will be understood. The particular valve construction here illustrated is particularly intended for carbon tetrachloride, or C. B. M.

The container is provided at its upper end, as seen in Fig. l, with a nipple 11, into which is screwed a valve body 12, into which in turn is screwed a plug 13. A rod 14 is screwed into the plug 13, to extend along the axis of the container, extending to the other end thereof.

Slidably mounted on rod 14 is a nozzle block 15, extending to the wall of the container, and having a bore 16 in its outer end communicating with a side outlet 17. This block serves as a gravity controlled inlet nozzle for a ilexble Siphon tube 18, attached to and in communication with the outlet 17. This tube is a little longer than the container and has its other end attached to the plug 13, and in communication with bore 19 through the plug.

verse to the container, and its mouth may conform substantially to the shape of the container wall, in order that the entire contents of the container may be rapidly discharged before the gas pressing can escape.

The Valve body has a chamber 23 at its inner end, with which the bore 19 communicates, and a valve head 24 lies within this chamber. The body has a central bore 25, terminating at the inner end in a valve seat 26, against! which the valve head 24 operates. A valve rod 27 ex.- tends upwardly through bore 25, through a bearing 28 into a spring chamber 29. A spring 30 is compressed within the the spring chamber 29, against a button 31 screwed on to valve rod 27.

With this construction the valve head 24 is held against the seat not only by the force of the spring 30, but also by the pressure of the gas within the container. Since the pressure within the cylinder is essential to the readiness of the device to function, a pressure gauge 32 is carried on the valve body 12, communicating with the chamber 23, through the channel 33.

The button 31 is provided with a ridge 34, and, mounted adjacent to the head pivoted on an axis 35, transverse to the axis of the valve stem, is a cam 36, having a central recess 37 in which the ridge 34 may easily rest when the valve head 24 is rmly pressed against the seat. This cam may be provided with two operating arms 38 and 38a which are integral with each other but which have extensions in different directions in order to provide conveniently located points of attachment for operating cords coming from different directions. This cam 36 is so shaped that as the arms 38 and 38a are tilted in either direction cam surfaces 39 and 39a, adjacent to the recess 37, will depress the button 31 to open the valve. Thus, the extinguisher may be opened by moving either arm 38 or 38a, in either direction. If desired shallow recesses 39b and 39C may be cut in the cam surface 39 and 39a to allow the cam to rest in the open position on being opened by arms 38 or 38a.

The bore 25 is provided with a lateral discharge port 40, through which the contents are expelled.

For the purpose of filling the container a gravity controlled valve operator 41 is also pivoted at 35, and this cam operator has a controlling weight 42 on one end, and a cam surface on the other having a recess 44 into which the ridge 34 may rest and be held in the open position, this recess being delined by a swell at each side thereof to hold the cam in position with the valve open but the remainder of the cam 43 is of small diameter insuilicient to engage therein any portion of the button 31. As here shown the cam is circular but eccentrically mounted thus when the cam is moved to carry the recess away from the ridge, the valve may close. The weight 42 is suicient to move the operator 41 to valve closing position as soon as the ridge is freed from its recess 44.

The arms 38 and 38a may be operated in any desired manner, as by means of cords 46, attached to them.

With the above construction it will be clear that, whatever position the container is held, the nozzle block 15 will fall downwardly until its intake is on the lowest side of the container. Similarly, if one end of the container is 2,ros,4ea

tilted up, the block will slide down to the lowest end, so that, so long as there is any substantial quantity of liquid in the container the intake will be submerged. Thus, there is no danger of the pressurizing gas blowing out the container before the liquid is discharged.

The foregoing description is intended as illustrative of one embodiment of my invention, the scope and nature of which is shown in the following claims.

I claim:

1. An extinguisher comprising a cylinder having a discharge outlet in one end, having a valve provided with an intake cavity therein, a guide rod supported by said valve and extending along the axis of said cylinder substantially to the other end of said cylinder, a block slidable on said rod having a nozzle having an intake orifice thereon, said block and said nozzle being shaped to permit said intake orice to slide clear from one end thereof to the other, a bar mounted parallel to said rod in position to limit the angle of rotation of said block around said rod and a flexible conduit connecting said intake orifice with the intake cavity of said valve.

2. A device according to claim l in which the intake orifice lies in a cylindrical surface closely adjacent to the inner surface of said cylinder.

3. An extinguisher valve mechanism for use with a pressure cylinder comprising a valve head having a valve seat facing the cylinder position, a valve within said head spring pressed to bear against said seat and having a stem extending upwardly through said head, said head having a discharge opening shut off from said cylinder by said valve, a lever for depressing said valve, a charging lever pivoted adjacent to the upper end of said valve stem having a recess into which the upper end of said stem may enter, said charging lever having a cam surface in position to depress said valve as said charging lever is moved, said surface terminating in a recess engageable by said valve stern in the open position to hold said charging lever in valve-open position, and means to urge said charging lever to valve-closed position as soon as said valve stem passes out of said recess, whereby said cylinder may be charged without being disconnected With the line, and when charged the charging lever will be retained in inoperative position until again required.

4. A device according to claim 3 in which the means urging the charging lever to inoperative position is a weight on said lever.

References Cited in the file of this patent UNITED STATES PATENTS 

